カーネーションの蕾開花促進法における品種適応性(収穫後の貯蔵・流通)  [in Japanese] Applicability of Commercial Carnation Cultivars to Bud Anthesis Acceleration (BAA) Method(Postharbvest Physiology & Technology)  [in Japanese]

蕾開花促進(BAA)法に,スタンダードタイプ6品種,スプレータイプ5品種を供試し,温度25℃,相対湿度75%,光環境1 klxで12時間日長,処理液のスクロース濃度5%の処理条件への適応性を評価した.いずれの品種でも収穫時の蕾径が小さいほど,がく割れや花弁の萎凋のような障害発生が認められたが,ある程度成然した蕾段階で処理することにより,障害発生率は著しく低下した.障害発生のほとんどない蕾ステージの範囲において,蕾径に基づいて3段階で収穫し同様の処理を施したところ,蕾径が大きいほど処理日数ぱ短くなり,同じ蕾径で比較すると通常収穫より出荷日を5.7日〜10.9日短縮できた.プレジャーでは蕾径15.2mm収穫で通常収穫より花径が小さく花持ちが短くなったが,18.4mm以上で収穫すると通常収穫と同等となった.しかし,'ラベンダーテッシノ'の花色発現および'ローランド'の花径と花持ちはいずれのステージで処理しても解決できず,BAA処理条件の調節による改善も困難と考えられ,BAA法には適さない品種と判断できた.

Thp applicability of commercial carnation cultivars (Dianthus caryophyllus L.) to Bud Anthesis Acceleration (BAA) method was investigated. Six standard type cultivars and five spray type cultivars were placed in BAA solution containing 5% sucrose, and kSept at temperature of 25℃(75%RH), light intensity of 1 klx and 12 h photoperiod. Harvesting at the small bud stage prompted calyx splitting and petal wilting in all cultivars. In the range of available bud diameter without causing damage on flower, the BAA treatment shortened the recommended days to shipping in all cultivars. Flower diameter was decreased by the treatrflent in 'Pleasure' and 'Roland'. Petal color pigmentation was inhibited in 'Opera', 'Riccard' and 'Lavender Tessino'. Vase life was shortened in 'Pleasure', 'Saleya', 'Lavender Tessino' and 'Roland'. Although most of these problems were solved by harvesting at large bud stage, petal color pigmentation in 'Lavender Tessino' and flower diameter and vase life in 'Roland' could not be improved by modification of BAA treatment since these cultivars have a high sugar concentration in the petal. It was concluded that 'Lavender Tessino' and 'Roland' were unsuitable for BAA method.